Enameling-furnace.



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' Patented Jan. 7,1919.

A. J. BOLAND.

ENAMEL URNACE. APPLICATION FILE 'MAYIMI 1,290,060.

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' ENAMELING FURNACE.

APPLICATION FILED MAY 14, IQIT.

Patented Jan. 7,1919. 4 SHEETS-SHgEPZ- WN I. uwr F W f ,3 Q 3 2 m .4 vj w Fig.5.

A. 1. BOLAND.

ENAMELING FURNACE. APPLICATION FILVED MAY 14; um.

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A farng Patented Jan. 7, 1919.

y A. I. BOLAND.

ENAMELIN'G FURNACE.

APPLICATION FILED MAY I4. 1917- Patented Jan.7, 1919.

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ALBERTJ. BOLAND, OF ST. LOUIS, MISSOURI.

ENAMELING-FURNACE.

Specification of Letters Patent.

Application filed-May 14, 1917. Serial No. 168,477.

To all whom it may concern:

Be it known that I, ALBERT J. BoLAND, a citizen of the United States, residing at the city of St. Louis and State of Missouri,hav,e invented certain new and useful Improvements in Enameling-Furnaces, of which the following is a specification,reference being had therein to the accompanying drawing.

My invention relates to improvements in enameling furnaces, and has for its object to provide a furnace heated by oil or gas, in which an approximately equable distribution of heat within the oven is accomplished by a system of unitary construction, consisting of pairs of fines encircling the oven, and the burners with which each flue of such pairs is provided being seated on opposite sides of the oven. By this basis of construction the furnace may be built to any desired length, the oven being surrounded by the necessary number of pairs of flues, each pair being provided with one righthand and one left-hand burner.

This invention relates to furnaces of tile,

brick, or like construction in which increased capacity may be secured by removing the end of the furnace and oven opposite the door, and extending oven and furnace to the desired length. Other structural and functional advantages incident to the employment of my invention will be apparent from the description and drawings.

In the drawings- Figure 1 is a longltudinal view in vertical mid-section of a furnace embodying my invention.

Fig. 2 is a longitudinal view of the same in horizontal section, taken on the line 2-2 of Fig. 3.

Fig. 3 is a view of the same, Fig. 2.

Fig. 4 is a similar view taken on the line 44 of Fig. 2.

As shown in the drawings the oven 10 is of any suitable dimensions, and is surrounded by the transverse vertical sectional taken on the line 33 of the flues 11 each having an oil or gas burner 13 on its right side (facing the front or door-end of 'thefurnac'e) and the flues 12 each having a corresponding burner 13 on the left or opposite side.

The outer wall 14 incloses said flues 11-12, its front end 15 the door 16, and its rear end 17 being solid as shown.

mufiling flues 11 and 12, in

being provided with.

A bed 18 forms the bottom of the furnace, beneath which are longitudinal cooling channels 19.

The flues 11 and 12 are connected above the oven by the longitudinal conduit 20 through which the waste products of combustion escape to the rear-most flue, in the series (see Fig. 2) escape from which flue to the exterior of the furnace is provided by the outer-flue 21, seated at the bottom of the end-wall 17 as shown in Fig. 1.

The details of construction, such as the buck-stays 22 whereby the outer wall 14 is reinforced, or the buttresses 23 whereby the outer wall 14 andend or rear wall 1 are spaced from the oven 10 and support the same, are common practice in the art and are indicated merely to show the preferred construction of the furnace embodying my invention as being readily extensible to meet the increased needs of the user.

The outer wall 14 1s provided with airinlets 24 .in which the burners 13 are concentrically mounted; the burners 13 illustrated being oil-burners,-fed with oil by the line-pipe 25 and fed with air by the air-pipe 26. But gas may be employed instead of oil, Where available.

While the flues 11-12 are preferably grouped in pairs as above described, it may be desirable in particular instances to form unitary groups of three or more flues, in which event the burners in each group will be so located with reference to the oven 10 and to each other as to balance or equalize the heat distribution in more flues, the burners in each group being so located with reference to the oven 10 and to the burners in the other flues of the group as to balance or equalize the heat distribution in accordance with the underlying system of balance em- Patented Jan. '7, 1919.

ployed where the flues are grouped in pairs. I

Such balancing will have reference to locations of the burners in a plane at or beneath the plane of the bottom of the oven 10.

The burners 13 are positioned as illustrated in Fig. 3. to the end that the blast of heat produced thereby is divided, a portion being driven horizontally beneath the full width of the oven 10, and the remainder ascending vertically, as indicated by the arrows in Fig. 3; this division being to the end of securing as perfect equality as possible between the heat, applied beneath the furnace and that applied at its side.

Having thus described my invention, what ..I claim as new and desire to have secured to me by the grant of Letters Patent, is-

of parallel equidistant vertical mufiiing flues,

the fiues in each pair being provided respectively with a right-hand burner and a lefthand burner, said burners being mounted in a plane beneath the plane of the bottom of the oven; and a longitudinal conduit above the oven connecting said flues.

2. In an enamellng furnace an oven; palrs of parallel vertical fiues encircling said oven,

each pair being provided with tWo oppositely-disposed burners; a horizontal flue above the oven connecting said vertical fines;

and an escape conduit extending through the furnace-Wall.

' 3. In an enameling furnace an oven; pairs of parallel vertical flues encircling said oven, each pair being provided with tWo oppositely-disposed burners; a horizontal vflue connecting said vertical fines; and an escape conduit extending through the furnace-Wall; said burners being mounted in a plane beneath the planeof the oven, and so positioned as to direct the blast of heat partially horizontally beneath and around the oven, and partially vertically along the side 7 of the oven.

In testimony whereof I hereunto afiix my signature.

ALBERT J. BOLAND. 

